CVE-2021-33019

Delta Industrial Automation DOPSoft TBK File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A stack-based buffer overflow vulnerability in Delta Electronics DOPSoft Version 4.00.11 and prior may be exploited by processing a specially crafted project file, which may allow an attacker to execute arbitrary code.

Una vulnerabilidad de desbordamiento de búfer en la región stack de la memoria en Delta Electronics DOPSoft Versiones 4.00.11 y anteriores, puede ser explotada al procesar un archivo de proyecto especialmente diseñado, lo que puede permitir a un atacante ejecutar código arbitrario.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation DOPSoft. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of TBK files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Anonymous

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-13 CVE Reserved
2021-08-30 CVE Published
2024-06-10 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-238-04	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1059	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Deltaww Search vendor "Deltaww"		Dopsoft Search vendor "Deltaww" for product "Dopsoft"				<= 4.00.11 Search vendor "Deltaww" for product "Dopsoft" and version " <= 4.00.11"		-		Affected